NYC Housing Data Dashboard
Citywide 311 complaint and HPD violation statistics for 834,402 buildings across all five boroughs. Updated daily from NYC Open Data. Cite any stat below — each has a permanent anchor URL.
How to cite this data — Cite as: "According to 311tracker.com/data, [stat]." Data updated daily from NYC Open Data. Press inquiries: hello@311tracker.com
91,545 open Class C violations — the most serious HPD category, covering conditions like lack of heat, active mold, and lead paint — are currently on file in The Bronx.
Cite as: "According to 311tracker.com/data, The Bronx has 157.6 open Class C HPD violations per 1,000 residential housing units, the highest rate in NYC."
Open HPD Violations all violations in DB are currently open
Open HPD housing violations by severity class. Class C violations are immediately hazardous — landlords are legally required to cure them within 24 hours. All violations below are unresolved.
Source: NYC HPD Housing Maintenance Code Violations (wvxf-dwi5) · Synced daily · Closed violations removed June 2026 — all 867,082 violations shown are currently open · Class I (administrative) excluded
Evictions Executed (Trailing 12 Months)
Source: NYC Dept. of Investigation — Marshal Evictions (6z8x-wfk4) · Synced daily · Residential only · Marshal-executed evictions only — not filings, which occur at a much higher rate · Records from 2017 onward
Borough Breakdown all 4 metrics by borough
| Borough | 311 Complaints | Open Violations | Class C | Evictions (12mo) | Complaints/Bldg |
|---|---|---|---|---|---|
| 1 The Bronx | 711,938 | 297,007 | 92,069 | 4,214 | 41.8 |
| 2 Manhattan | 455,261 | 141,306 | 44,314 | 1,964 | 27.1 |
| 3 Brooklyn | 585,035 | 282,525 | 74,772 | 2,879 | 17.9 |
| 4 Queens | 263,914 | 128,006 | 31,933 | 2,634 | 13.0 |
| 5 Staten Island | 32,261 | 18,238 | 3,911 | 383 | 10.0 |
Sources: 311 complaints (erm2-nwe9) · HPD violations (wvxf-dwi5) · Evictions (6z8x-wfk4) — all via NYC Open Data · Complaints and evictions sorted by total 311 complaints · Eviction counts: trailing 12 months, residential executed evictions only · Class C counts here include all buildings with HPD records (residential and non-residential); the headline citable finding above uses residential buildings only as the denominator for its per-unit rate
Top 5 Complaint Types
Most Complained-About Buildings
| # | Address | Complaints | Violations |
|---|---|---|---|
| 1 | 1040b East 217 Street, Bronx The Bronx | 6,378 | 16 |
| 2 | 957 Woodycrest Avenue, Bronx The Bronx | 5,491 | 91 |
| 3 | 31-35 Crescent Street, Queens Queens | 4,632 | 2 |
| 4 | 2802 Fredrick Douglass Bl, Manhattan Manhattan | 3,815 | 130 |
| 5 | 30-70 34 Street, Queens Queens | 3,463 | 31 |
| 6 | 16 Richman Plaza, Bronx The Bronx | 3,183 | 383 |
| 7 | 2176 Tiebout Avenue, Bronx The Bronx | 3,044 | 36 |
| 8 | 707 East 242 Street, Bronx The Bronx | 2,992 | 32 |
| 9 | 225 Central Park North, Manhattan Manhattan | 2,901 | 6 |
| 10 | 9 Metropolitan Oval, Bronx The Bronx | 2,784 | 858 |
DOHMH Rat Inspection Results official inspector outcomes
Results of physical inspections conducted by DOHMH inspectors at NYC buildings. This is a distinct dataset from HPD 311 complaints — these are official on-site findings, not citizen reports. Source: NYC Open Data dataset p937-wjvj.
Example citation — "According to 311tracker.com/data, DOHMH inspectors found active rat signs in 22.2% of NYC rodent inspections in the trailing 30-day period." Data: NYC Open Data p937-wjvj, updated daily.
Inspection Failure Rate by Borough
| Borough | Total Inspections | Active Rat Signs Found | Failure Rate |
|---|---|---|---|
| 1 Brooklyn | 916,873 | 175,767 | 19.2% |
| 2 The Bronx | 821,527 | 145,157 | 17.7% |
| 3 Manhattan | 966,009 | 154,750 | 16% |
| 4 Queens | 246,212 | 33,222 | 13.5% |
| 5 Staten Island | 59,279 | 3,496 | 5.9% |
About This Data
311 Complaints: NYC 311 Service Requests (dataset erm2-nwe9), filtered to agency HPD.
Date range: January 1, 2024 to present. Updated daily. Heat complaints use complaint_type LIKE '%HEAT%'; pest complaints use complaint_type='UNSANITARY CONDITION' AND descriptor='PESTS'.
HPD Violations: HPD Housing Maintenance Code Violations (dataset wvxf-dwi5).
Closed violations (1.27M rows) were removed in June 2026 to manage database size — all violations shown are currently open. Classes A, B, C only; Class I (administrative notices) excluded.
Violation rate per 1,000 residential units uses PLUTO residential unit counts (unitsres) as denominator, summed per borough for buildings in residential PLUTO classes (first-character A, B, C, D, S, R, H, V, Y; buildings with zero units excluded). Per-unit is preferred over per-building because Manhattan buildings average ~30 units each vs. the Bronx's ~7.7, so a per-building rate would overstate Manhattan's share relative to the actual number of housing units exposed. Total residential units in denominator: 3.68M citywide.
Evictions: NYC Marshal Evictions (dataset 6z8x-wfk4), residential only. This dataset covers evictions executed by a City Marshal — not filings, which occur at a much higher rate. Records from 2017 onward. Synced daily with a 7-day lookback window to account for DOI publication lag.
DOHMH Rodent Inspections: dataset p937-wjvj.
Trailing 30-day fail rate uses inspections where inspection_date ≥ today − 30 days. DOHMH data publishes with ~10-day lag, so the 30-day window effectively covers ~20–30 days of recent activity.
"Failure" = result contains "Failed for Rat Activity."
Building matching: Complaints, violations, and evictions are matched to buildings via BBL (borough-block-lot identifier) from the NYC Department of City Planning PLUTO dataset. 834,402 buildings seeded from PLUTO.
Batch-closure rate (28.4%): Heat complaints closed in batches of ≥5 at identical timestamps — a proxy for HPD's duplicate-consolidation mechanism. Computed from a June 2026 batch analysis.
Dashboard stats: All aggregate statistics are pre-computed nightly and cached in the database. Last computed: September 27, 2026. Stats refresh daily at 8am UTC via automated GitHub Actions workflow.
Contact: hello@311tracker.com for data requests or press inquiries. Cite as: "Source: 311tracker.com/data".